Port 28589 (bosswave)

IANA assigns port 28589 to bosswave: Building operating system services wide area verified exchange.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference

bosswave TCP Building operating system services wide area verified exchange University of California Berkeley -

Registry dates for this port: registered 2016-06-13.

Linux: is anything listening on TCP 28589?

sudo ss -tlnp 'sport = :28589'

Linux / macOS: which process owns the port

sudo lsof -nP -i :28589

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':28589 '

Windows (Command Prompt)

netstat -ano | findstr :28589

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 28589 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 28589

From Windows

Test-NetConnection HOST -Port 28589

ufw

sudo ufw deny 28589/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 28589 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 28589 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 28589' -Direction Inbound -Protocol TCP -LocalPort 28589 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.